{
    This file is part of restemplate.

    Copyright (C) 2015 Andreas Schneider

    restemplate is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    sqlvision is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with restemplate.  If not, see <http://www.gnu.org/licenses/>.
}

program restemplate;

uses
  SysUtils, Classes, strutils, JTemplate, httpsend, IniFiles,
  ssl_openssl;

var
  data: TextFile;
  line: String;
  parser: TJTemplateParser;
  http: THTTPSend;
  method: String;
  content: TStringList;
  commandMode: Boolean;
  configDir, templateDir: String;
  templateFile, templateName: String;
  sessionIni: TIniFile;

procedure CmdAskUser(AName: String);
var
  value, default: String;
begin
  Write(AName);
  default := sessionIni.ReadString(templateName, AName, '');
  if default <> '' then
    Write(' [', default, ']: ')
  else
    Write(': ');

  ReadLn(value);

  if value = '' then
    value := default;

  parser.Fields.Add(AName, value);

  sessionIni.WriteString(templateName, AName, value);
end;

procedure CmdHeader(AHeader: String);
begin
  parser.Content := AHeader;
  parser.Replace;
  http.Headers.Add(parser.Content);
end;

procedure CmdCall(AURL: String);
var
  s: String;
begin
  parser.Content := AURL;
  parser.Replace;
  writeln('Calling ', parser.Content);

  if content.Count > 0 then
    content.SaveToStream(http.Document);

  if http.HTTPMethod(method, parser.Content) then
  begin
    writeln;
    writeln('Status: ', http.ResultCode);
    writeln;
    writeln('Headers:');
    for s in http.Headers do
      writeln('  ', s);
    writeln;
    content.LoadFromStream(http.Document);
    writeln(content.Text);
  end else
  begin
    ExitCode := 2;
    writeln;
    writeln('FAILED! Last Socket Error: ', http.Sock.SocksLastError);
  end;
end;

function ProcessCommand(ALine: String): Boolean;
begin
  Result := False;
  if AnsiStartsStr('Ask ', ALine) then
  begin
    Result := True;
    CmdAskUser(Copy(ALine, 5, Length(ALine)));
  end else
  if AnsiStartsStr('Header ', ALine) then
  begin
    Result := True;
    CmdHeader(Copy(ALine, 8, Length(ALine)));
  end else
  if AnsiStartsStr('Method ', ALine) then
  begin
    Result := True;
    method := Copy(ALine, 8, Length(ALine));
  end else
  if AnsiStartsStr('Call ', ALine) then
  begin
    Result := True;
    CmdCall(Copy(ALine, 6, Length(ALine)));
  end;
end;

procedure ListProfiles;
var
  sr: TSearchRec;
begin
  Writeln('Known profiles:');
  if FindFirst(templateDir + '*.rest', faAnyFile, sr) = 0 then
  begin
    repeat
      writeln('  ', Copy(sr.Name, 1, Length(sr.Name) - 5));
    until FindNext(sr) <> 0;
  end;
end;

begin
  configDir := GetAppConfigDir(False);
  templateDir := configDir + 'templates' + PathDelim;

  templateFile := templateDir + ParamStr(1) + '.rest';

  if ParamCount <> 1 then
  begin
    Writeln('Usage: ', ExtractFileName(ParamStr(0)), ' <profile or file>');
    Writeln;
    ListProfiles;
    Halt(0);
  end;

  if FileExists(ParamStr(1)) then
  begin
    AssignFile(data, ParamStr(1));
    templateName := ExtractFileName(ParamStr(1));
    if AnsiEndsStr('.rest', templateName) then
      templateName := Copy(templateName, 1, Length(templateName) - 5);
  end else
  if FileExists(templateFile) then
  begin
    AssignFile(data, templateFile);
    templateName := ParamStr(1);
  end else
  begin
    writeln('Template not found!');
    Halt(1);
  end;
  Reset(data);

  sessionIni := TIniFile.Create(configDir + 'session.ini');

  parser := TJTemplateParser.Create;
  http := THTTPSend.Create;
  content := TStringList.Create;

  commandMode := True;

  while not EOF(data) do
  begin
    ReadLn(data, line);
    if commandMode and (line <> '') and not ProcessCommand(line) then
      commandMode := False;

    if not commandMode then
      content.Add(line);
  end;

  sessionIni.Free;
  parser.Free;
  http.Free;
  content.Free;

  CloseFile(data);
end.